If you are looking for the ultimate double pumper carburetor, then Holley has you covered with these new Ultra Double Pumper. Holley double pumper carburetors are a performance icon and now Holley has taken everything great about their double pumper and made it better. Featuring an all aluminum construction, these Ultra Double Pumper carburetors are lighter than ever and are also equipped with 6061-T6 billet aluminum metering blocks and base plates. Available in a shiny tumble polished finish or Hard Core Gray finish with black, blue or red metering blocks, the personalization of the carburetor is in your hands! Each Ultra Double Pumper carburetor comes with 4 corner idle control, clear level sight plugs, four vacuum ports and for the first time on a double pumper, factory pre-set electric choke.